Psychiatric Advance Directives can be a very important and effective tool to
combat forced drugging and other forced psychiatric "treatment."
PsychRights has at least some information on Psychiatric Advance Directives in
the following countries:

Since 2009, Germany has had progressive legislation safeguarding psychiatric
advance directives. People who want to effectively protect themselves
legally from violent psychiatric treatment can do this by creating advance
directives. In that year, the German guardianship law was reformed and a
provision (“Advance directive for health care”, § 1901a) included that an
adult considered capable of consent has the right to affirm in writing
“independently of the type and stage of an illness” whether he or she
“assents or disagrees with treatments, diagnostic procedures or medical
interventions that are not immediately at hand at the time of this
declaration.” For more information see: Peter Lehmann, “Forced Psychiatric
Treatment (and Protection against it) in Germany in 2013”, contribution for
“Mad in America – Science, Psychiatry and Community” (webzine of Robert
Whitaker), September 7, 2013 –
http://www.madinamerica.com/2013/09/forced-psychiatric-treatment-protection-germany-2013/